The marketing team at an internet music site wants a better understanding of who their customers are. They send out a survey to 25 customers (and use an incentive of $50 worth of downloads to guarantee a high response rate) asking for demographic information. One of the variables is the customer's age. For the 25 customers, the ages are shown to the right. Complete parts a) through d). a) Find the quartiles using technology. Q1 = and Q3 = b) Find the quartiles using the Tukey method. 1-0 and Q3= c) Find the IQR using the quartiles from part b. IQR= Q1 = d) Find the standard deviation. 20 32 35 29 32 31 30 13 29 12 38 22 44 47 26 26 23 31 35 33 36 43 44 44 48
The marketing team at an internet music site wants a better understanding of who their customers are. They send out a survey to 25 customers (and use an incentive of $50 worth of downloads to guarantee a high response rate) asking for demographic information. One of the variables is the customer's age. For the 25 customers, the ages are shown to the right. Complete parts a) through d). a) Find the quartiles using technology. Q1 = and Q3 = b) Find the quartiles using the Tukey method. 1-0 and Q3= c) Find the IQR using the quartiles from part b. IQR= Q1 = d) Find the standard deviation. 20 32 35 29 32 31 30 13 29 12 38 22 44 47 26 26 23 31 35 33 36 43 44 44 48
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The marketing team at an internet music site wants a better understanding of who their customers are. They send out a survey to 25 customers
(and use an incentive of $50 worth of downloads to guarantee a high response rate) asking for demographic information. One of the variables is
the customer's age. For the 25 customers, the ages are shown to the right. Complete parts a) through d).
a) Find the quartiles using technology.
Q1 = and Q3 =
b) Find the quartiles using the Tukey method.
Q1 = 0 and Q3 =
c) Find the IQR using the quartiles from part b.
IQR=
d) Find the standard deviation.
The standard deviation is
(Round to three decimal places as needed.)
20|32|35|29|32
31 30 13 29 12
38 22 44 47 26
26 23 31 35 33
36 43 44 44 48
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